regression testing

regression testing (uncountable)

1. (software engineering) Testing a program after a modification to ensure that areas that should not be affected by the update behave as they did in previous versions.
   • 1999, Elfriede Dustin, ‎Jeff Rashka, & ‎John Paul, Automated Software Testing, →ISBN:

     During manual test execution, a newly introduced defect to previously working functionality might not be found until hours into the regression testing cycle.

   • 2000, Robert V. Binder, Testing Object-oriented Systems: Models, Patterns, and Tools, →ISBN, page 32:

     Without regression testing, unseen bugs will accumulate, until suddenly nothing works in what was once thought to be a stable system.

   • 2004, Mark Last, ‎Abraham Kandel, ‎& Horst Bunke, Artificial Intelligence Methods in Software Testing, →ISBN, page 52:

     Regression testing can account for as much as one-half of the cost of software maintenance.

• testing

• regression testing on Wikipedia.Wikipedia